>Hakkero, the Furnace of Eight Trigrams, and The Journey to the West
All fine examples about how the further down history, the more things are mixed and indiscernible.
The onmyōdō pentagram is invented by Abe no Seimei, and represents the Five Elements, but at that point in history it was quite impossible to say whether onmyōdō (the Way of Yin-Yang) is Taoist or Shinto.
Similarly, in SoPM, Kanako brought up shugendō
- a Japanese mountain ascetic practice or sect that's closely associated with the myths of tengu and ninja. It's Buddhism, Shintoism and Taoism at the same time.
The classical Chinese novel "The Journey to the West" is unique among its contemporaries in certain ways. Part of the author's agenda seems to be that Buddhism is superior to Taoism, yet the author must be an expert in Taoist alchemy, because the novel's chapter titles are laden with jargons that would fly over the head of everyone who's not an alchemist.